Roller bearing



G. A. DARBY. ROLLER BEARING. APPLICATION FILED AUG-25. I920.

Paten ted Dec.12,1922.

A Arm/Mr Patentcedlmea l2, llQZZ,

- entrain A. DARBY, OF EAST ORANGE, NEW J ASSIGNOE TO THE HART ROLLER. 'BELLIRING COMPANY, OF GRANGfillEl V JERSEY, A CORPORATION OF NEWJERSEYJ ROLLER BEARING.

Application filed au ustas, 1920. Serial at. sonata citizen of the United States, and a resident of East Orange, in the county o'f'Es'seX'and' itate of New Jersey, have invent dcertain new and useful Improvements. in Roller Bearings oi which't-hefollowing is a de: scription.

My invention relates to roller bearin s employing a plurality of series of cylindrical or conical rollers, and more particularly, though not exclusively, to roller bearings of the type disclosed in Patent l lo. 1205,4419,

granted November 21,1916 to Orlando We Hart. j

A roller hearing such as described in said patent comprises aplurality of adjacent annular series of cylindricalrollers disposed between and in rolling engagement with relatively rotatableinner and outer cylindrical bearing members. The rollers or" each series are of equal length, andthe corresponding rollers in alternate series are mounted on cylindrical aligning shafts or spacing rollers, the arrangement being such that the rollers and shafts of each series respectively coact with the shafts and rollers ofeach adjacent series so as to maintain the rollers of adjacent series in staggered relation and to maintain the rollers of each series in' proper spaced relation, preventing the collapsingof the same. When a bearing of this character, or any bearing con'iprising a plurality of adjacent series of rollers and i in which the rollers of each series are of equal length, is in use, especially if subjected to heavy loads, ridges corresponding to the slight spaces between adjacent series of rollers are apt to be formed by the rollers on the opposed surfaces of the spaced bearing members, be tween the bearing tracks of the respective series of rollers. As the operation of the bearing is continued, the metal forming these ridges is apt to be worn or broken oil from the bearinr members with conse uent:

disclosed in Patent No. 1,205,449 referred .to ab0ve,avhereby the objections just described will be obviated.

My invention'zturther resides in, the con struction of parts and combinations of ele ments hereinafter more fully described and claimed,

For a clearer understanding of my invention, attention is directed'to the drawing accompanying and forming a part o'lr' this specification, and in which: 1

Figure 1 is a viewin side elevation, partly broken and partly in section, of one form of roller bearing in accordance with iny in vention; v

Figure 2 isa view in end elevation, partly broken away, of the bearing showninjFigurelrand Figure 3 is a View showing a development of the rollers as constructed and arranged in the bearing shown in Figures 1 and 2:

The bearing shown in the drawing for the purpose of illustrating invention is of thel-lart type, and coinprises inner and outer hardened cylindrical bearing members or casings 1 and 2, and three annular series of bearing rollers A, B and C, disposed between and in rolling engagement with said bearing member s. Of course, the number of, series of rollers employed may be varied as desired. The corresponding pairs of bearing rollers 3, 3? and i, lfofthetwo outer series A and C are. respectively. loosely mounted on cylindrical aligning and spacing shafts or rollers .5, while the bearing rollers 36 ofthe intermediate series B are respectively loosely. mounted on similar shat-ts 7. The shafts Sand Y are parallel to the axis of the bearing and are somewhat longer thanthe coinbinedwidth ofthe series A, B i and C, the extending endportions thereof being reduced. The rollers and shafts of each series respectively coact with the shafts and rollers ofeach adjacent series, whenthe bearing is assembled, tomaintain the rollers or adjacent series staggered and also' to maintain the rollers of each series in proper s aaced relation, in the manner described in atent No. 1,205,449 referred to above. It will be noted that the shafts of each series of rollers extend between and are in rolling engagement with the adjacent bearing rollers of each adjacent series. A nairuof at annular rings 8 and 9 are p ctivelyidisposed adjacent the ends of the roller assembly and the respective reduced and portions of the shafts or spacing rollers 5 and 7 loosely engage openings provided therefor in said rings. Certain oi the shafts 5 and 7 are peened over or otherwise provided with heads 10 at their ends, whereby the rings 8 and 9 are held in fixed relation to the roller assembly and in turn act to maintain the bearing rollers and shafts or spacing rollers of the assemblyin proper relative position regardless whether the roller assembly is or is not positioned between the cylindrical bearing mem bers or casings 1 and 2 of the bearing.

' Certain of the bearing rollers 3 and 4c of the two outermost series A and C respec tively, are longer than the remaining rollers 3 andl respectively, while the bearing rollers 6 of'the intermediate series B are preferably all of the same length. The arrangement is such that the bearing rollers are preterablymaintained in assembled position with the outer ends of the rollers of the outermost series'A and C respectively dis posed in common planes, with each bearing roller of each series substantially in rolling end'engagement with at least one roller of each adjacent series. It will thus be seen that certain of the bearing rollers of each series are axially overlapped by certain of the bearing rollers of each adjacent series,

that the over-all width oi the roller as sembly is uniform, and that the bearing rollers of the adjacent series coact to prevent relative axial movement of any of such rollers.

It will be apparent that by reason of the axial overlapping ofcertain of the rollers of each pair of adjacent series, every portion of the bearing surface of each of the annular bearing members or casings 1 and 2 will be in almost continuous rolling en-.

gagement with the bearing rollers of the bearing in the operation of the latter. Accordingly, the formatiouofridges on the said bearing surfaces and thedisadvantages resulting therefrom are entirely prevented by my invention.

mile 1 have shown and described a preferredembodiment of my invention, it is to be understood that such embodiment is sub ject to various changes and modifications.

without departing from the spirit of the invention and the scope of the. appended claims. It is also to be distinctly understood that my invention is not limited in its application to roller bearings, of the Hart 1. A rollerbealring comprising a plurality of annular series of bearing rollers, and spacing rollers respectively disposed between and in rolling engagement with the adjacent bearing rollers of each series certain of said series each having bearing rollers of difierent length, the rollers being assembled so as to coact to prevent substantial relative axial movem'entof any of the bearing rollers, and with one or more bearing rollers of each series axially overlapping one or more bearing rollers of each acent series.

2. in a roller bearing, a plurality of annular series of bearing rollers, and spacing rollers respectively disposed between and i rolling engagement with the adjacent hearing rollers of each series, each of the outermost series comprising bearing rollers of different length, the rollers being assembled so as to coact to prevent substantial relative axial movement of any of the bearing rollers and with certain of the bearing rollers'of each series axially overlapping certain or the bearing rollers of each adjacentseries.

3. in a roller bearing, a plurality oi an.- nular series of bearing rollers, and spacing rollers respectively disposed between and in rolling en agement with the adjacent hearing rollers of each series, eachoi the outermost series onl comprising bearing rollers of difi'erent length, the rollers being assembled soflas to coact to prevent substantial relative axial movement or any ofthe bearing'rollers and with certain of the bearing rollers oi. each series axially overlapping certain of the bearing rollers of each adjacent se *ies.

j .4. roller bearing comprising a plurality of annularfseries of bearingrollers, and spacing rollers respectively disposed between and in rolling engagement with the adj acent bearing rollers of each series, eac-h oi said series having one or more bearing rollers axially overlapping one or more bearing rollers of each adjacent series.

- 5. A roller bearing comprising a plurality of annular series of rollers, and shafts on which the rollers of each series are respectively mounted, the shafts and rollers of each series coac-ting with the rollers and shafts of adjacent series to maintain the rollers of adjacent series in staggered relation, one or more rollers of each series axially overlapping one or more rollers of each adjacent series.

6. A roller'bearing comprising a plurality of annular series of rollers and shaits on which the rollers of each series are respectively vloosely mounted, the shafts of each, series respectively extending between the adjacent rollers of each adjacent series, and certain of the rollers in each series axially overlapping certain of the rollers in each adj acent series. 7

7 A roller bearing comprising a plurality of annular series of rollers, and shafts on which the rollers of each seriesare-respecti'vely loosely mounted,"theshafts'of each series respectively extending between the adj a'cent rollers of each. adjacent series, certain of said series each having rollers of different length, the rollers of the different series coacting to prevent substantial relative axial movement of any of the rollers, and one or more of the rollers 01 each series axially overlapping one ormore rollers of each adjacent series.

8. A roller bearing comprising spaced cylindrical bearing members, a plurality of annular series of rollers disposed between said members, and shafts on which the rollers of each series are respectively mounted, the shafts and rollers of each series coacting with the rollers and shafts of adjacent series to maintain the rollers of adjacent series in staggered relation, certain of the rollers of each series axially overlapping certain of the rollers of each adjacent series, the width of the assembled series of rollers being uni form.

9. A roller bearing comprising a plurality of annular series of hearing rollers, and spacing rollers respectively disposed between and in rolling engagement with the adjacent hearing rollers 01"" each series, each of said series having one or more bearing rollers axially overlapping one or more bearing rollers of each ad acent series, each otthe bearing rollers of each series having rolling" end engagement with at least one roller of each adjacent series.

10. A roller bearing comprising a plurality of annular series of rollers, and shafts on which the rollers of each series are respectively loosely mounted, the shafts oi each se- 11. A roller bearing comprising a plurality of annular series of bearing rollers, each of said series having one or more hearing rollers axially overlapping one or more hearing rollersof each adjacent series.

This specification signed this PAthday of August 1920.

GEORGE A. DARBY. 

